Vise.



L. 3. STAERETT.

VISE.

APPLICATION FILED JUNEZE), 1910 1,012,226. Patented Dec. 19,1911.

2 22 l V/T/vEssgs 1- 2] E H UNETED STATES PATENT QFFICE.

LABOY S. STARR-EIT, OF ATHOL, MASSACHUSETTS, ASSI GNOR TO L. S. STARRET'I COM- PANY, OF ATHOL, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

VISE.

Specification of Letters Patent.

Application filed June 29, 1910. Serial No. 569,436.

To all whom it "may concern:

Be it known that I, LAROY S. STARREr'r, a citizen of the United States, residing at Athol, county of Worcester, Commonwealth of Massachusetts, have invented certain new and useful Improvements in Vises, of which the following is a specification.

This invention relates to vises, and particularly to the adjustment and positioning of the vise jaws.

The desired adjustment and positioning of vise jaws is usually a double one, first the movement of the jaws with relation to each other to clamp the work and second the setting of the jaws relative to the support to give proper access and convenience in position, at any angle with the bench.

In most forms of vises, and especially in such vises as employ ascrew'to secure relative movement of the clamping jaws, it has been customary to provide a bar for the rotation of the screw shaft. This bar, in order to be accessible and in order to have sufiicient operating room, must be located on the outside of the vise where it will clear the bench and be convenient to the hand of the workman. Its very position of convenience, however, has proved a matter of inconvenience under many circumstances, inasmuch as on many jobs it is necessary for the work man to get close to thevise, in a position which has been rendered impossible, or at least awkward or uncomfortable by the pro truded ends of the operating bar. This was early recognized and an effort was made to overcome the difiicult-y by making the operating bar slidable through the head at the end of the screw shaft, so that after the vise had been set up the bar could he slid down through the head to hang below the level of the vise, and thus be out of the way of the user. Such a construction, although of such assistance that it came into practically universal use, had many diiiiculties. One of these was that unless the jaws happened to meet at the particular phase of the rotation sition twice in each revolution it usually did project more or less on the side and was, therefore, usually in the way. Another difficulty with the sliding bar was that it frequently dropped or slid through the head at unexpected times and, as it was usually supplied at either end witha ball stop of considerable weight, there was a frequent opportunity for pinching or bruising the hands of the operative if they happened to be near at the time of such a fall.

In view of all these difficulties, it is the object of the present invention to provide an operating device which shall be capable of satisfactorily performing the usual functions of the ordinary operating bar and at the same time be capable of a return to a position in which it will be out of the way. This is'accomplished by the operating head being disengageable from the operating shaft so as to permit it to be dropped into the position desired at whatever phase of rotation the shaft be in when the jaws are clamped upon the work. The positioning of the jaws I accomplish by means which make their adjustment and readjustment a matter of ease and facility. .1

In'the drawings which form a part of the specification, is shown, as illustrative of the invention, an ordinary vise equipped with a form of the invention which is found well adapted to practical uses.

Throughout specification and drawings like reference numerals are employed to indioate corresponding parts and in the drawings :F1gure 11s a central vert cal'sectl'on of a vise equipped with the invention, Fig. 2, a

sectional view of the shaft, clutch and col" lar on the line 2-2, Fig. 1, Fig. 3, a side view of the clutch members with the sleeve broken away, Fig. 4, a face view of one of the clutch members, and Fig. 5 is an end view of my vise with a part broken away to show the locking pin.

The vise illustrated in the drawing consists of a usual base 1 suitably connected by a pivot 2 to a plate 30 which maybe bolted to the bench in the usual manner, and having formed on its upper portion a jaw 3. The oppositely faced jaw 4 is provided with a guiding shank 5 which passes through an tially the diameter of said hub, a sleeve on In testimony whereof, I affix my signature said head, suriigmnding said clutch and inin presence of two Witnesses.-

closin said hu the outer end of said head having a recess about the end of the shaft, a LAROY STABRETT' spring in said recess and surrounding the Witnesses:

recess, and bearing upon said spring and an FRANK E. WING,

operating bar fixed in said head. ERNEST V. TAYLOR. 

